[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-5659) Problem using Hibernate3.6.0.Final with CLOB field in Oracle.
[
http://opensource.atlassian.com/projects/hibernate/browse/HHH-5659?page=c...
]
David Linsey commented on HHH-5659:
-----------------------------------
Thanks, after your guidance and some troubleshooting, I figured out a combination that
works. First, in previous tests I had set the use_streams_for_binary in the
hibernate.cfg.xml which isn't supported as it is a global property. Once I set it in
hibernate.properties, and changed the type in the mapping file to materialized_clob, I got
a class cast exception. This turned out to be because my POJO defined the columns a
java.sql.Clob, which is what it was with old Hibernate (I already switched my code to use
LobHelper to write the data). Switching this to a plain old String fixed it. Seems using
the streams parameter the data type needs to be a String and it handles the conversion to
Clob itself inside Hibernate. The fact the Oracle9Dialect already sets this streams
parmeter to true but it isn't picked also is confusing, but seems Steve is aware of
that and I found a rejected bug from 2004 on it too (HB-646).
Problem using Hibernate3.6.0.Final with CLOB field in Oracle.
-------------------------------------------------------------
Key: HHH-5659
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5659
Project: Hibernate Core
Issue Type: Bug
Components: core
Affects Versions: 3.6.0
Environment: Hibernate 3.6.0.Final, Database Oracle10G on Linux X64, and JPA
Reporter: Samuel Rettore
Priority: Minor
Fix For: 3.6.1, 4.0.0.Alpha1
Attachments: createClob_Deprecated.png, Hibernate_createClob_Deprecated.png,
LobHelper_Interface.png, Srhlog.java
When migrating my project that works well with Hibernate 3.5.6 End-to 3.6.0.Final the
Clob field displays the following error
|java.lang.ClassCastException: $Proxy1119 cannot be cast to oracle.sql.CLOB
at
oracle.jdbc.driver.OraclePreparedStatement.setClob(OraclePreparedStatement.java:7021)
at
org.hibernate.type.descriptor.sql.ClobTypeDescriptor$1.doBind(ClobTypeDescriptor.java:60)
at org.hibernate.type.descriptor.sql.BasicBinder.bind(BasicBinder.java:89)
at
org.hibernate.type.AbstractStandardBasicType.nullSafeSet(AbstractStandardBasicType.java:282)
at
org.hibernate.type.AbstractStandardBasicType.nullSafeSet(AbstractStandardBasicType.java:277)
at
org.hibernate.type.AbstractSingleColumnStandardBasicType.nullSafeSet(AbstractSingleColumnStandardBasicType.java:85)
at
org.hibernate.persister.entity.AbstractEntityPersister.dehydrate(AbstractEntityPersister.java:2166)
at
org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2412)
at
org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2856)
at org.hibernate.action.EntityInsertAction.execute(EntityInsertAction.java:79)
at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:273)
at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:265)
at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:184)
at
org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:321)
at
org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:51)
at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1216)
at
org.hibernate.ejb.AbstractEntityManagerImpl.flush(AbstractEntityManagerImpl.java:795)
at
com.sun.enterprise.container.common.impl.EntityManagerWrapper.flush(EntityManagerWrapper.java:407)
---
This error appears only with CLOB field.
to get more information at their disposal.
Thanks
Rettore.
--
This message is automatically generated by JIRA.
-
If you think it was sent incorrectly contact one of the administrators:
http://opensource.atlassian.com/projects/hibernate/secure/Administrators....
-
For more information on JIRA, see: http://www.atlassian.com/software/jira